TreeHouse\Feeder\Modifier\Data\Transformer\StringToBooleanTransformer

Complexity

Total Complexity

12

Size/Duplication

Total Lines	88
Duplicated Lines	5.68 %

Coupling/Cohesion

Components	1
Dependencies	1

Test Coverage

Coverage

100%

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
B	__construct()	0	17	5
C	transform()	5	31	7

<?php

namespace TreeHouse\Feeder\Modifier\Data\Transformer;

use TreeHouse\Feeder\Exception\TransformationFailedException;

class StringToBooleanTransformer implements TransformerInterface
{
    /**
     * @var array
     */
    protected $defaultTruthyValues = [
        'true',
        'yes',
        'on',
    ];

    /**
     * @var array
     */
    protected $defaultFalsyValues = [
        'false',
        'no',
        'off',
    ];

    /**
     * @var array
     */
    protected $truthyValues;

    /**
     * @var array
     */
    protected $falsyValues;

    /**
     * @param array $truthy
     * @param array $falsy
     * @param bool  $merge
     */
    public function __construct(array $truthy = [], array $falsy = [], $merge = true)
    {
        if (empty($truthy)) {
            $truthy = $this->defaultTruthyValues;
        } elseif ($merge) {
            $truthy = array_merge($this->defaultTruthyValues, $truthy);
        }

        if (empty($falsy)) {
            $falsy = $this->defaultFalsyValues;
        } elseif ($merge) {
            $falsy = array_merge($this->defaultFalsyValues, $falsy);
        }

        $this->truthyValues = array_map('mb_strtolower', $truthy);
        $this->falsyValues = array_map('mb_strtolower', $falsy);
    }

    /**
     * @inheritdoc
     */
    public function transform($value)
    {
        // only transform when we have something to transform
        if (is_null($value)) {
            return $value;
        }

        if (is_bool($value)) {
            return $value;
        }

        if (!is_scalar($value)) {

This code seems to be duplicated across your project.

            throw new TransformationFailedException(
                sprintf('Expected a scalar value to transform, got %s instead.', var_export($value, true))
            );
        }

        if (trim($value) === '') {
            return null;
        }

        if (in_array(mb_strtolower($value), $this->truthyValues)) {
            return true;
        }

        if (in_array(mb_strtolower($value), $this->falsyValues)) {
            return false;
        }

        return (boolean) $value;
    }
}